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报告题目：第四代计算机体系结构的终结与新的前进道路。The End of the Fourth Age of Computer Architecture and a New Road Forward

演讲摘要：自从第一台电子计算机问世以来，大约65年过去了。前三代计算机已经成为过去，而以多核通用微处理器为主的第四代计算机正处于衰败期。摩尔定律的放缓和丹尼德缩放的终结，使通用微处理器40年的统治走向终结。为什么底层技术的这些变化无法克服？我们如何设计计算机来提高性能，特别是对于像机器学习这样计算要求很高的任务？ About 65 years have passed since the first electronic computers became available. Three earlier generations have passed away, and the fourth, dominated by multiple cores of general purpose microprocessors, is in its waning days. The combination of the slowdown in Moore's Law and the end of Dennard scaling is bringing the 40-year reign of the general purpose microprocessor to an end. Why are these changes in underlying technology proving insurmountable? How can we design computers to deliver improved performance, especially for computationally demanding tasks like machine learning?

讲者介绍：John L. Hennessy is the James F. and Mary Lynn Gibbons Professor of Computer Science and Electrical Engineering in the Stanford School of Engineering, and the Shriram Family Director of Stanford’s Knight-Hennessy Scholars, the largest fully endowed graduate-level scholarship program in the world. He is chairman of Alphabet and serves as a trustee of the Gordon and Betty Moore Foundation. Formerly the tenth president of Stanford, he is also a computer scientist who co-founded MIPS Computer Systems and Atheros Communications. John is the coauthor (with David Patterson) of two internationally used textbooks in computer architecture. His honors include the 2012 Medal of Honor of the Institute of Electrical and Electronics Engineers and the 2017 ACM A.M. Turing Award (jointly with David Patterson). John earned his bachelor’s degree in electrical engineering from Villanova University and his master’s and doctoral degrees in computer science from the Stony Brook University.